Storage full

Hello Denny_w,

Welcome to Apple Support Communities. 

We understand that photos are taking up most of your iPhone storage. We are happy to help.

Are you suing optimized storage for your photos? Did you previously use iCloud Photos? These answers will help us to isolate the cause further.

Many times restarting your device can resolve many concerns. Please use the steps here to restart your iPhone: Restart your iPhone - Apple Support

"How to restart your iPhone 6, 7, 8, or SE (2nd or 3rd generation)

1. Press and hold the side button until the power-off slider appears.
2. Drag the slider, then wait 30 seconds for your device to turn off. If your device is frozen or unresponsive, force restart your device.
3. To turn your device back on, press and hold the side button until you see the Apple logo."

Apple recently released iOS 16.3.1. We recommend using the steps here to update your iOS version: Update your iPhone or iPad - Apple Support

"Update your iPhone or iPad wirelessly

1. Back up your device using iCloud or your computer.
2. Plug your device into power and connect to the internet with Wi-Fi.
3. Go to Settings > General, then tap Software Update.
4. If you see more than one software update option available, choose the one that you want to install.
5. Tap Install Now. If you see Download and Install instead, tap it to download the update, enter your passcode, then tap Install Now. If you don't know your passcode, learn what to do."

Let us know if you have further questions.

Take care.